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157639-67-3

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157639-67-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 157639-67-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,6,3 and 9 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 157639-67:
(8*1)+(7*5)+(6*7)+(5*6)+(4*3)+(3*9)+(2*6)+(1*7)=173
173 % 10 = 3
So 157639-67-3 is a valid CAS Registry Number.

157639-67-3Relevant articles and documents

Cesium trifluoroacetate or silver oxide mediated acyl migration for the construction of disaccharide building blocks

Deng, Shenglou,Chang, Cheng-Wei Tom

, p. 756 - 760 (2006)

A convenient method for the selective differentiation of the 2-OH and 3-OH of pyranosides, based on the CsO2CCF3- or Ag 2O-mediated acyl migration, has been established. The 2-OH and 3-OH can be sequentially glycosylated b

Synthesis of 5a-Carba-&β-D-glycosylceramide Analogs Linked by Imino, Ether and Sulfide Bridges

Tsunoda, Hidetoshi,Ogawa, Seiichiro

, p. 267 - 278 (2007/10/02)

Carbocyclic analogs of glycoceramides, (2S,3R,4E)-1-(5a-carba-β-D-glycopyranosyl)-2-(hexadecanoylamino)-4-octadecen-3-ols E-3 - E-6, linked by imino, ether and sulfide bridges, were synthesized by coupling of aziridines, as the sphingosine precursors, wit

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